announce.c
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上传日期:2009-03-27
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文件大小:5k
- /*****************************************************************************
- * announce.c : Session announcement
- *****************************************************************************
- * Copyright (C) 2002 VideoLAN
- *
- * Authors: Cl閙ent Stenac <zorglub@via.ecp.fr>
- * Damien Lucas <nitrox@via.ecp.fr>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #include <stdlib.h> /* free() */
- #include <errno.h> /* ENOMEM */
- #include <stdio.h> /* sprintf() */
- #include <vlc/vlc.h>
- #include <vlc/sout.h>
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #endif
- #ifdef WIN32
- # include <winsock2.h>
- # include <ws2tcpip.h>
- # ifndef IN_MULTICAST
- # define IN_MULTICAST(a) IN_CLASSD(a)
- # endif
- #else
- # include <sys/socket.h>
- #endif
- #ifdef HAVE_SLP_H
- # include <slp.h>
- #endif
- #include "announce.h"
- #include "network.h"
- #define DEFAULT_PORT 1234
- #ifdef HAVE_SLP_H
- /*****************************************************************************
- * sout_SLPBuildName: Builds a service name according to SLP standard
- *****************************************************************************/
- static char * sout_SLPBuildName(char *psz_url,char *psz_name)
- {
- char *psz_service;
- unsigned int i_size;
- /* name to build is: service:vlc.services.videolan://$(url) */
- i_size = 8 + 12 + 12 + 5 + strlen(psz_url) + 1;
- psz_service=(char *)malloc(i_size * sizeof(char));
- snprintf( psz_service , i_size,
- "service:vlc.services.videolan://udp:@%s",
- psz_url);
- /* How piggy ! */
- psz_service[i_size]=' '; /* Just to make sure */
- return psz_service;
- }
- /*****************************************************************************
- * sout_SLPReport: Reporting function. Unused at the moment but needed
- *****************************************************************************/
- static void sout_SLPReport(SLPHandle slp_handle,SLPError slp_error,void* cookie)
- {
- }
- #endif
- /*****************************************************************************
- * sout_SLPReg: Registers the program with SLP
- *****************************************************************************/
- int sout_SLPReg( sout_instance_t *p_sout, char * psz_url,
- char * psz_name)
- {
- #ifdef HAVE_SLP_H
- SLPHandle slp_handle;
- SLPError slp_res;
- char *psz_service= sout_SLPBuildName(psz_url,psz_name);
- if( SLPOpen( NULL, SLP_FALSE, &slp_handle ) != SLP_OK)
- {
- msg_Warn(p_sout,"Unable to initialize SLP");
- return -1;
- }
- msg_Info(p_sout , "Registering %s (name: %s) in SLP",
- psz_service , psz_name);
- slp_res = SLPReg ( slp_handle,
- psz_service,
- SLP_LIFETIME_MAXIMUM,
- NULL,
- psz_name,
- SLP_TRUE,
- sout_SLPReport,
- NULL );
- if( slp_res != SLP_OK )
- {
- msg_Warn(p_sout,"Error while registering service: %i", slp_res );
- return -1;
- }
- return 0;
- #else /* This function should never be called if this is false */
- return -1;
- #endif
- }
- /*****************************************************************************
- * sout_SLDePReg: Unregisters the program from SLP
- *****************************************************************************/
- int sout_SLPDereg( sout_instance_t *p_sout, char * psz_url,
- char * psz_name)
- {
- #ifdef HAVE_SLP_H
- SLPHandle slp_handle;
- SLPError slp_res;
- char *psz_service= sout_SLPBuildName(psz_url,psz_name);
- if( SLPOpen( NULL, SLP_FALSE, &slp_handle ) != SLP_OK)
- {
- msg_Warn(p_sout,"Unable to initialize SLP");
- return -1;
- }
- msg_Info(p_sout , "Unregistering %s from SLP",
- psz_service);
- slp_res = SLPDereg ( slp_handle,
- psz_service,
- sout_SLPReport,
- NULL );
- if( slp_res != SLP_OK )
- {
- msg_Warn(p_sout,"Error while registering service: %i", slp_res );
- return -1;
- }
- return 0;
- #else /* This function should never be called if this is false */
- return -1;
- #endif
- }